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发明名称
Selbstanzeigende Ringscheibe.
摘要
申请公布号
CH172109(A)
申请公布日期
1934.09.30
申请号
CHD172109
申请日期
1932.10.17
申请人
JOHANNSEN,HANS
发明人
JOHANNSEN,HANS
分类号
F41J5/20
主分类号
F41J5/20
代理机构
代理人
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地址
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